Year	Index (Units)
1980	1.914
1981	2.122
1982	2.278
1983	2.511
1984	2.672
1985	2.957
1986	3.054
1987	2.704
1988	2.815
1989	3.010
1990	3.650
1991	4.213
1992	5.029
1993	6.163
1994	8.786
1995	11.439
1996	13.794
1997	15.395
1998	16.410
1999	16.868
2000	17.956
2001	20.737
2002	22.096
2003	27.010
2004	33.954
2005	38.745
2006	43.771
2007	46.797
2008	52.652
2009	55.599
2010	57.223
2011	60.222
2012	63.654
2013	67.027
2014	69.142
2015	72.818
2016	81.145
2017	89.754
2018	100.000
2019	117.308
2020	144.225
2021	167.216
2022	213.328
2023	307.405
2024	378.147
2025	432.132
2026	485.933
2027	541.883
2028	604.275
2029	673.850